Reason:
There are 6^4 = 6*6*6*6 = 1296 ways to roll a die four times.
This is equivalent to having 1296 ways to roll four dice.
Each die has 6 sides. Repeat entries are possible.
Out of those 1296 total outcomes, only one has the sequence 6234. The order matters.
Therefore, 1/1296 is the probability of getting this sequence in the order mentioned.